don't stop at leeches and chronies. scud, dragons, damsels, you name it all fish well under an indicator. scud move a lot and dragons dart this way and that, but most of the time they are moving slowly or just hanging around. i think the reason the indicator works is that it slows down our retrieve. most trout food is incapable of moving as fast as we fishermen present it. a well placed indicator also places the food just above cover and those are the specimens that naturally get picked off. takes a lot of dicipline, and skill, to fish slow and near cover without an indicator, like Brian Chan's. Indicators are a pain to cast.